PD 22.5W Bidirectional Fast Charging Power Bank Circuit Board with Digital Display
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৳ 320.00৳ 350.00 (-9%)
This is a PD 22.5W Bidirectional Fast Charging Power Bank Circuit Board, a high-efficiency power management module designed for custom DIY power banks or circuit repairs. The board handles both input recharging and output power delivery at up to 22.5W through multiple protocols, including USB Power Delivery (PD) and Quick Charge (QC). It features an integrated numerical LED display that tracks real-time battery capacity percentage and active fast-charging handshakes.
The image shows a PD 22.5W Bidirectional Fast Charging Power Bank Circuit Board, a compact power management module engineered to handle efficient battery replenishment and regulated output distribution for custom DIY portable chargers.
🔋 Core Micro-Architecture & Power Flow
- Integrated Management SoC: Managed by a central synchronous buck-boost control chip that automatically orchestrates charging and discharging logic.
- Synchronous Conversion Block: Employs a robust, surface-mounted power inductor (marked 2R2) to ensure high-efficiency voltage conversion while minimizing board-level thermal dissipation.
- Battery Interface Terminals: Features dedicated solder terminals marked B- (and an adjacent positive terminal) on the lower-left edge for bridging 3.7V/4.2V lithium pouch cells or 18650/21700 cell banks wired in parallel.
🔌 Multi-Port Interface Matrix
- Dual USB Type-A Outlets: Two independent output ports equipped with high-conductivity structural internal tongues to support high-amperage charging currents.
- USB Type-C Terminal: A central bidirectional interface that functions as a high-speed input for charging the power bank and a Power Delivery (PD) output to fast-charge external electronics.
- Legacy Micro-USB Input: Outfitted with a standard micro-USB socket on the far left, providing a secondary choice for lower-voltage input charging grids.
📊 Real-Time Diagnostic Display
- Segmented LED Numerical Screen: Integrates a small digital display unit to read out real-time battery storage percentages directly.
- Fast-Charge Indicator Light: Houses a small internal thunderbolt symbol next to the digits that illuminates to verify when a fast-charging handshake protocol is engaged.
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